U.S. patent application number 12/004849 was filed with the patent office on 2008-09-04 for computer device having display device capable of being automatically turned off or turned on according to switch motion of host.
This patent application is currently assigned to INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD.. Invention is credited to Yue-Qin Lu, Tong Zhou.
Application Number | 20080215898 12/004849 |
Document ID | / |
Family ID | 39566775 |
Filed Date | 2008-09-04 |
United States Patent
Application |
20080215898 |
Kind Code |
A1 |
Lu; Yue-Qin ; et
al. |
September 4, 2008 |
Computer device having display device capable of being
automatically turned off or turned on according to switch motion of
host
Abstract
An exemplary computer device (10) includes a host (11)
configured for generating a turn on signal when the host is turned
on, and a turn off signal when the host is turned off; and a
display device (13) including a display unit (131) and an automatic
control circuit (12). The automatic control circuit is configured
for receiving the turn on signal and the turn off signal and
turning on or turning off the display unit according to the
received the turn on signal and the turn off signal. Thus when the
host of the computer is turned on or turned off, the display unit
of computer device can be automatically turned off or turned on
according to a switch instruction of the host.
Inventors: |
Lu; Yue-Qin; (Shenzhen,
CN) ; Zhou; Tong; (Shenzhen, CN) |
Correspondence
Address: |
WEI TE CHUNG;FOXCONN INTERNATIONAL, INC.
1650 MEMOREX DRIVE
SANTA CLARA
CA
95050
US
|
Assignee: |
INNOCOM TECHNOLOGY (SHENZHEN) CO.,
LTD.
INNOLUX DISPLAY CORP.
|
Family ID: |
39566775 |
Appl. No.: |
12/004849 |
Filed: |
December 21, 2007 |
Current U.S.
Class: |
713/300 |
Current CPC
Class: |
G06F 1/266 20130101 |
Class at
Publication: |
713/300 |
International
Class: |
G06F 1/26 20060101
G06F001/26 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 22, 2006 |
CN |
200610157901.7 |
Claims
1. A computer device comprising: a host configured for generating a
turn on signal when the host is turned on, and a turn off signal
when the host is turned off; and a display device comprising a
display unit and an automatic control circuit, the automatic
control circuit being configured for receiving the turn on signal
and the turn off signal and turning on or turning off the display
unit according to the received turn on signal or turn off
signal.
2. The computer device as claimed in claim 1, wherein the automatic
control circuit comprises a controller, an external power supply, a
power supply circuit, and a switching unit connected between the
power supply circuit and the display unit, the controller is
configured for turning on or turning off the switching unit
according to the received turn on signal or turn off signal, and
the controller is further configured for connecting or
disconnecting the power supply circuit to the external power supply
according to the received turn on signal or turn off signal.
3. The computer device as claimed in claim 2, wherein the host
comprises a video graphics array (VGA) input/output, which is
configured for providing the turn on signal and the turn off
signal.
4. The computer device as claimed in claim 2, wherein the host
comprises a digital visual interface (DVI) input/output, the DVI
input/output configured for providing the turn on signal and the
turn off signal, and the DVI input/output comprising a first output
for outputting the turn on signal and a second output for
outputting the turn off signal.
5. The computer device as claimed in claim 4, wherein the
controller comprises a trigger and a relay, the trigger is
configured for receiving the turn on signal and the turn off signal
and controlling the relay according to the received turn on signal
or turn off signal thereby connecting the power supply circuit to
the external power supply or disconnecting the power supply circuit
from the external power supply, and the trigger is further
configured for turning on or turning off the switching unit.
6. The computer device as claimed in claim 5, wherein the switching
unit comprises a controlling terminal, the switching unit is turned
on when a low level voltage generated by the trigger is provided to
the controlling terminal, and the switching unit is turned off when
a high level voltage generated by the trigger is provided to the
controlling terminal.
7. The computer device as claimed in claim 6, wherein the trigger
comprises a first input connected to the first output of the DVI
input/output, a second input connected to the second output of the
DVI input/output, a third output, and a fourth output connected to
the controlling terminal of the switching unit, the relay comprises
a third input connected to the third output of the trigger, a
fourth input connected to ground, a fifth output connected to the
external power supply, and a sixth output connected to ground, and
the power supply circuit is connected between the fifth and sixth
outputs of the relay.
8. The computer device as claimed in claim 7, wherein further
comprising a resistor connected between the first output of the DVI
input/output of the host and the first input of the trigger.
9. The computer device as claimed in claim 8, wherein a resistance
of the resistor is approximately equal to 100.OMEGA. (ohm).
10. The computer device as claimed in claim 7, wherein further
comprising a resistor connected between the first input of the
trigger and the second input of the trigger.
11. The computer device as claimed in claim 10, wherein a
resistance of the resistor is approximately equal to
4.7K.OMEGA..
12. The computer device as claimed in claim 7, wherein further
comprising a resistor connected between the second input of the
trigger and the controlling terminal of the switching unit.
13. The computer device as claimed in claim 12, wherein a
resistance of the resistor is approximately equal to
4.7K.OMEGA..
14. The computer device as claimed in claim 6, wherein further
comprising a resistor connected between the controlling terminal of
the switching unit and the fourth output of the trigger.
15. The computer device as claimed in claim 14, wherein a
resistance of the resistor is approximately equal to 1K.OMEGA..
16. The computer device as claimed in claim 6, wherein further
comprising a capacitor and a voltage stabilizing diode connected in
parallel between the fifth and sixth outputs of the relay.
17. The computer device as claimed in claim 16, wherein a
capacitance of the capacitor is approximately equal to 0.1
.mu.F.
18. The computer device as claimed in claim 1, wherein the
automatic control circuit and the display unit are integrated
together in the display device.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a computer device having a
display device which is capable of being automatically turned off
or turned on according to a switch instruction of a host.
GENERAL BACKGROUND
[0002] Computer devices have been widely used in all kinds of
technology fields such as scientific calculation, industry control,
and information processing.
[0003] Normally, a computer device includes a host and a display
device connected to the host. When the computer device is ready to
start working, an external power supply is respectively supplied to
the host and the display device. Power supply circuits of the host
and the display device start working respectively. When an operator
presses power on/off buttons of the display device and the host,
the display device and the host are turned on respectively. On the
other hand, when the computer device is ready to shut down, a
program stored in the host need to be performed. Then the operator
presses the power on/off button of the display device to turn off
the display device. Finally, the external power supplied to the
host and the display device should be disconnected, in order to
prevent accidental operation of the power supply circuits of the
host and the display device. All in all, the process for turning on
or turning off the computer device is complex and inconvenient for
the user.
[0004] It is desired to provide a computer device which can
overcome the above-described deficiencies.
SUMMARY
[0005] In one preferred embodiment, a computer device includes a
host configured for generating a turn on signal when the host is
turned on, and a turn off signal when the host is turned off; ; and
a display device including a display unit and an automatic control
circuit. The automatic control circuit is configured for receiving
the turn on signal and the turn off signal and turning on or
turning off the display unit according to the received the turn on
signal and the turn off signal.
[0006] Other novel features and advantages will become more
apparent from the following detailed description when taken in
conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is essentially a circuit diagram of a computer device
according to a first embodiment of the present invention.
[0008] FIG. 2 is essentially a circuit diagram of a computer device
according to a second embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0009] Reference will now be made to the drawings to describe the
present invention in detail.
[0010] Referring to FIG. 1, a computer device 10 according to a
first embodiment of the present invention is shown. The computer
device 10 includes a host 11 and a display device 13.
[0011] The host 11 includes a digital visual interface (DVI)
input/output 110 configured to provide a turn on/off signal
according to a switch instruction of the host. The DVI input/output
110 includes a first output 111 for outputting a turn on signal,
and a second output 112 for outputting a turn off signal.
[0012] The display device 13 includes a display unit 131, and an
automatic control circuit 12 configured to turn on or turn off the
display unit 131. Both the display unit 131 and the automatic
control circuit 12 are integrated in the display device 13.
[0013] The automatic control circuit 12 includes a controller 170,
a switching unit 130, an external power supply 150, and a power
supply circuit 160.
[0014] The switching unit 130 includes a controlling terminal (not
labeled), a first conducting terminal (not labeled), and a second
conducting terminal (not labeled).
[0015] The controller 170 includes a trigger 120 and a relay 140.
The trigger 120 includes a first input 121 connected to the first
output 111 of the DVI input/output 110, a second input 122
connected to the second output 112 of the DVI input/output 110, a
third output 123, and a fourth output 124 connected to the
controlling terminal of the switching unit 130.
[0016] The relay 140 includes a third input 141 connected to the
third output 123 of the trigger 120, a fourth input 142 connected
to ground, a fifth output 143 connected to the external power
supply 150, and a sixth output 144 connected to ground. The power
supply circuit 160 is connected between the fifth and sixth outputs
143, 144 of the relay 140.
[0017] The power supply circuit 160 is connected to the display
unit 131 via the first and second conducting terminals of the
switching unit 130.
[0018] Typical operation of the computer device 10 is as follows.
When the host 11 is turned on, a first high level voltage is
generated and provided to the first output 111 of the DVI
input/output 110, and there is no signal at the second output 112
of the DVI input/output 110. The first high level voltage is
provided to the first input 121 of the trigger 120. Thus the
trigger 120 generates a second high level voltage, and provides the
second high level voltage to the third input 141 of the relay 140.
Accordingly, a current is generated and flows through a winding
(not labeled) of the relay 140 connected between the third and
fourth inputs 141, 142. The current flow in the winding generates
electromagnetism, which attracts an elastic switch member (not
labeled) of the relay 140. The switch member moves under the
magnetic force and closes a circuit of the relay 140, thereby
electrically connecting the fifth and the sixth outputs 143, 144 of
the relay 140. Thus the power supply circuit 160 is connected to
the external power supply 150, and sn operating voltage is
generated by the power supply circuit 160.
[0019] Furthermore, the trigger 120 generates a low level voltage
upon receiving the first high level voltage, and provides the low
level voltage to the controlling terminal of the switching unit
130. Thereby, the switching unit 130 is switched on. The power
supply circuit 160 is connected to the display unit 131 via the
activated switching unit 130, and the operating voltage is provided
to the display unit 131 in order to drive the display unit 131.
Thus the display device 13 is turned on.
[0020] When the host 11 is turned off, a third high level voltage
is generated and provided to the second output 112 of the DVI
input/output 110, and there is no signal at the first output 111 of
the DVI input/output 110. The third high level voltage is provided
to the second input 122 of the trigger 120. Thus the trigger 120
generates a fourth high level voltage, and provides the fourth high
level voltage to the controlling terminal of the switching unit 130
via the fourth output 124. Thereby, the switching unit 130 is
switched off. The power supply circuit 160 is electrically
disconnected from the display unit 13, and the operating voltage is
no longer provided to the display unit 131.
[0021] Furthermore, the trigger 120 generates a low level voltage
upon receiving the third high level voltage, and provides the low
level voltage to the third input 141 of the relay 140. Accordingly,
no current flows through the winding of the relay 140, and the
switch member rebounds and opens said circuit of the relay 140.
Thereby, the fifth and the sixth outputs 143, 144 of the relay 140
are electrically disconnected. The power supply circuit 160 is
disconnected from the external power supply 150, and stops working.
Thus the display device 13 is turned off.
[0022] Because the DVI input/output 110 generates a turn on/off
signal according to a switch instruction of the host 11, the
controller 170 can automatically connect/disconnect the power
supply circuit 160 to/from the external power supply 150 according
to the turn on/off signal. Furthermore, the automatic control
circuit 12 can automatically connect/disconnect the power supply
circuit 160 to/from the display unit 131 by controlling the
switching unit 130 according to the turn on/off signal. Therefore
when the host 11 of the computer 10 is turned on or turned off, the
display unit 131 of computer device 10 can be automatically turned
off or turned on according to the switch instruction of the host
11. Thus the computer device 10 is convenient for an operator to
use.
[0023] Referring to FIG. 2, a computer device 20 according to a
second embodiment of the present invention is similar to the
computer device 10. However, a display device 23 of the computer
device 20 further includes a first resistor 281, a second resistor
282, a third resistor 283, a fourth resistor 284, a capacitor 285,
and a voltage stabilizing diode 286.
[0024] The first resistor 281 is connected between a first output
211 of a DVI input/output 210 of a host 21 and a first input 221 of
a trigger 220. The second resistor 282 is connected between the
first input 221 of the trigger 220 and a second input 222 of the
trigger 220. The third resistor 283 is connected between the second
input 222 of the trigger 220 and a controlling terminal of a
switching unit 230. The fourth resistor 284 is connected between
the controlling terminal of the switching unit 230 and a fourth
output 224 of the trigger 220. The capacitor 285 and the voltage
stabilizing diode 286 are connected in parallel, between two
outputs 243, 244 of a relay 240.
[0025] The first, second, third, and fourth resistors 281, 283,
283, 284 are configured for limiting current and protecting the
computer device 20. Typically, a resistance of the first resistor
281 is approximately equal to 100.OMEGA. (ohms). A resistance of
each of the second and third resistors 282 is approximately equal
to 4.7K.OMEGA. (kiloohms). A resistance of the fourth resistor 284
is approximately equal to 1K.OMEGA.. A capacitance of the capacitor
is approximately equal to 0.1 .mu.F (microfarads).
[0026] In alternative embodiments, the host 11, 21 of the computer
device 10, 20 can generate the turn on/off signal and provide the
turn on/off signal to the automatic control circuit 12, 22 via a
video graphics array (VGA) input/output thereof instead of the DVI
input/output 110/210.
[0027] It is to be further understood that even though numerous
characteristics and advantages of preferred and exemplary
embodiments have been set out in the foregoing description,
together with details of the structures and functions of the
embodiments, the disclosure is illustrative only; and that changes
may be made in detail, especially in matters of arrangement of
parts within the principles of the present invention to the full
extent indicated by the broad general meaning of the terms in which
the appended claims are expressed.
* * * * *